Micro textures in concentrated-conformal-contact lubrication: Effect of distribution patterns

Ning Ren*, Toshikazu Nanbu, Yoshiteru Yasuda, Dong Zhu, Q Jane Wang

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

74 Scopus citations

Abstract

Micro-scale textures may be engineered into surfaces for lubrication performance improvement. It is expected that a carefully chosen texture helps retain lubricant and enhances the hydrodynamic effect at the interface. The concept of model-based virtual texturing enables textured surfaces to be generated and "tested" through numerical simulations. This paper reports virtual texturing and simulation of a group of textured surfaces in a lubricated concentrated contact. The focus of the study is on the selection of texture distribution patterns based on their lubrication performance. Patterns of fishbone, sinusoidal, triangular, and honeycomb distributions have been investigated. The effects of texture direction, orientation angle, feature continuity, and aspect ratio are also studied. The results indicate that, for the given material and geometry system under the given conditions in the present work, the textures generating the strongest hydrodynamic lifting are short grooves with a small aspect ratio and sinusoidal waves of a small wavelength/amplitude ratio propagating in the motion direction.

Original languageEnglish (US)
Pages (from-to)275-285
Number of pages11
JournalTribology Letters
Volume28
Issue number3
DOIs
StatePublished - Dec 1 2007

Keywords

  • EHL
  • Partial-EHL
  • Roughness effects
  • Surface modification
  • Surface roughness

ASJC Scopus subject areas

  • Mechanics of Materials
  • Mechanical Engineering
  • Surfaces and Interfaces
  • Surfaces, Coatings and Films

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